Rudolf Mathias Schleiden was Minister to the US from the Bremen Republic from 1853 through the War Between the States. He reported to his government on February 26  that “like a thief in the night, the future President arrived here [Washington] on the morning of the 23rd.” Schleiden offered to mediate the coming conflict, but met indifference and resistance at Washington.
Bernhard Thuersam, www.Circa1865.com
Lincoln Feared Re-election Loss
“Immediately upon arriving in Richmond, Schleiden wrote to Vice President [Alexander H.] Stephens asking for an interview, to which the latter replied that he would be happy to see him immediately. During the course of a confidential talk which lasted for three hours Stephens declared that he believed all attempts to settle peacefully the differences between the two sections were futile.
“The actions of Seward and Lincoln had filled the South with suspicion,” Stephens said, “but neither the Government at Montgomery nor the authorities of Virginia contemplated an attack on Washington. Public opinion was embittered against the United States because of its strengthening of Fort Pickens and Fort Monroe, and the destruction of the arsenal at Harpers Ferry, and the navy yard at Norfolk . . . ”
In a formal letter written after the conference Schleiden asked for a frank statement of the terms which the South would be ready to grant and accept for the purpose of securing the maintenance peace and gaining time for reflection. To this letter Stephens replied, stating that the Government of the Confederacy had resorted to every honorable means to avoid war, and that if the United States had any desire to adjust amicably the question at issue it should indicate a willingness in some authoritative way to the South.
However, he added . . . ”it seems to be their policy to wage a war for the recapture of former possessions looking to the ultimate coercion and subjugation of the people of the Confederate States to their power and domain. With such an object on their part persevered in, no power on earth can arrest or prevent a most bloody conflict.”
The reelection of Lincoln was almost unanimously predicted by the diplomatic corps in January 1864. In February Schleiden mentioned in a dispatch that Lincoln said to Judge Thomas, of Massachusetts, that he would be satisfied if his successor was elected from the Republican Party. If that did not take place the President feared that he would spend the rest of his life in jail for repeated violations of the Constitution. About this time [Salmon P.] Chase remarked to Schleiden that the war would never end so long as Lincoln was president.”
(Rudolf Schleiden and the Visit to Richmond, April 25, 1861, Ralph Haswell Lutz, American Historical Association Annual Report, 1915, Washington, 1917, pp. 212-216)